Blower Door/Envelope Testing | Prov Environmental

Blower Door/Envelop Testing

Blower Door Testing

Uncontrolled air leakage can lead to higher energy bills, poor indoor comfort, and compromised building performance. At Provision Environmental Systems & Testing, our blower door testing identifies exactly where unwanted air infiltration is occurring so you can achieve a healthier, more efficient, and code-compliant facility.

How It Works

During the test, a powerful fan is mounted in an exterior door frame to draw air out of the building. This lowers the interior air pressure, causing higher outside air pressure to flow inward through every unsealed gap, crack, or penetration in the building envelope. By identifying these leakage points, we can help ensure:

Proper Pressurization – Maintaining correct building pressure relationships for comfort and safety.
Improved Air Exchange – Eliminating uncontrolled infiltration for healthier indoor air quality.
Energy Savings – Reducing wasted heating and cooling costs by tightening the building envelope.
Code & Standard Compliance – Meeting NBC, ASHRAE, and industry requirements for air tightness testing.

Why It Matters

A blower door test is more than just a diagnostic tool for long-term building performance. By pinpointing where energy loss and poor air control occur, we provide actionable insights that help you create a comfortable, efficient, and compliant facility.

At Provision, we don’t just test—we provide solutions that give you confidence your building is performing the way it should.

Building Enclosure / Envelope Testing

A building is only as efficient as its envelope. The integrity of the building enclosure directly impacts energy use, comfort, durability, and indoor environmental quality. At Provision Environmental Systems & Testing, our Building Enclosure Testing (BET) ensures your facility performs at the highest standard—reducing costs, preventing problems, and improving long-term building performance.

Why Building Enclosure Testing Matters

Lower Energy Costs – Reduce heating and cooling loads by eliminating unwanted air leakage.
Prevent Moisture Intrusion – Identify and correct weaknesses that can lead to condensation, mold, and structural damage.
Improve Indoor Comfort & Air Quality – Maintain consistent temperatures and healthier indoor environments.
Enhance Sustainability & Durability – Ensure your facility meets today’s energy and performance standards for long-term reliability.
Verification of Air Barrier Effectiveness – Ensure that the building envelope is sealed and performing as designed.
Energy Efficiency Gains – Identify and eliminate leakage directly tied to energy use and utility costs.

Our Testing Approach

Blower Door Testing – Using powerful fans mounted in door frames, we create controlled pressurization and depressurization to measure leakage rates with high precision.
Thermographic Imaging – Infrared imaging is used to visually identify weaknesses, revealing exactly where leakage or thermal transfer is occurring.
Zone & Component Leak Testing – Targeted assessments for individual building sections, helping owners and contractors address problem areas quickly and effectively.

Our Testing Standards

Every project is tested in accordance with:

State Energy Codes
ASHRAE Standard 0-2005
National Institute of Building Sciences (NIBS) Guideline 3-2012
NBC (National Balancing Commission) Testing & Balancing Protocols
BPI (Building Performance Institute) Testing Protocols

Our Process

Using advanced diagnostic methods, our certified specialists verify the airtightness and integrity of the building enclosure system. We provide detailed results, identify any deficiencies, and recommend corrective actions—giving you a clear path to compliance and efficiency.

At Provision, we don’t just test—we deliver solutions that make your building safer, healthier, and more cost-effective to operate.

Commercial Duct Air Leakage Testing

Leaky ductwork is one of the most common—and costly—issues in HVAC performance. Excessive leakage not only increases energy use and operational costs but also prevents systems from delivering air efficiently, leading to discomfort, poor indoor air quality, and premature equipment strain.

At Provision Environmental Systems & Testing, we perform precise Duct Air Leakage Testing to measure air leakage against SMACNA (Sheet Metal & Air Conditioning Contractors’ National Association) performance standards, ensuring your system meets design and code requirements.

Why Duct Leakage Testing Matters

Energy Efficiency – Reduce wasted heating and cooling caused by uncontrolled duct leakage.
System Performance – Ensure proper airflow delivery to occupied spaces.
Lower Operating Costs – Save money by eliminating unnecessary energy loss.
Comfort & Air Quality – Maintain stable indoor environments with balanced airflow.
Compliance Assurance – Meet SMACNA and NBC standards for duct system performance.

Our Testing Process

Pressurize the installed ductwork using specialized equipment.
Measure air leakage rates under controlled conditions.
Compare results against SMACNA performance standards and design specifications.
Provide a certified report documenting compliance and, if needed, recommended corrective actions.

At Provision, we don’t just test for leaks—we help you create a tighter, more efficient, and higher-performing duct system that delivers long-term value.

Residential Duct Leak Testing

Even tiny leaks in a home’s ductwork can lead to big problems—higher energy bills, uncomfortable rooms, and poor system performance. Visual inspections alone cannot detect these issues, which is why building codes now mandate pressurized duct leak testing for residential HVAC systems. At Provision Environmental Systems & Testing, we deliver certified, accurate, and reliable duct leak testing to ensure efficiency, comfort, and compliance.

Why Duct Leak Testing Matters

Energy Efficiency – Leaky ducts waste conditioned air, increasing utility costs.
Comfort & Air Quality – Prevents hot/cold spots and improves indoor air quality.
Code Compliance – Meets IEEC and IRC requirements for duct sealing and leakage performance.
Peace of Mind – Certified technicians with advanced equipment ensure reliable results.

What the Codes Require

Recent revisions to the International Energy Efficiency Code (IEEC) and International Residential Code (IRC) require pressure testing whenever ducts are installed outside the conditioned living space (attics, crawl spaces, etc.). Studies show visual inspections alone cannot ensure proper sealing—only pressure testing can reliably confirm minimal leakage.

Insulation Requirements – Supply ducts in attics must be insulated to R-8, and all other ducts to at least R-6.
Allowable Leakage Rates:
- Rough-In Test – ≤ 4 CFM per 100 sq. ft. of conditioned living area.
- Final System Test – ≤ 6 CFM per 100 sq. ft. of conditioned living area.

Our Testing Methods

We perform both code-approved test types:

Rough-In Test – Conducted before drywall/finishes are installed to identify leaks early and allow for corrections.
System Test – Conducted after the air handler and all ductwork are installed for final compliance verification.

Both tests use a certified duct leak test fan and calibrated orifice tube to pressurize the system to 0.10” w.c. and measure leakage accurately.

The Provision Difference

NBC-Certified TAB Professionals
Certified testing equipment for reliable, repeatable results
Clear, documented reports for contractors, code officials, and homeowners
Proven track record of helping contractors and municipalities meet residential HVAC performance codes

At Provision, we don’t just check for leaks—we ensure your home’s duct system is sealed, efficient, and code-compliant, saving money and improving comfort for years to come.